Portable baking oven



Feb. 13, 1940.

B. c. BARTLEBAUGH PORTABLE BAKING OVEN Fild April 5, 1957 15 reheated whether the heating medium be. gas, electricity or coal, thereby savingiuel consump Patented Feb. 13, 1940 a UNITED STATES PATENT "OFFiCE The present invention isdirected to improvements in portable baking ovens. The primary object of the invention is to provide ah oven of this character so constructed that the heat will be compelled to circulate freely across the bottom, sides and top wall of the oven .propei'. l

A further object of the invention is to provide the oven proper with inclined bottom and top walls in order,that the heat during its circulation will he in no way retarded.

Another object of the invention is to provide an'oven wherein the heat will be caused-topfi-Ss completely around the oven proper in one direction, and during the circulation thereof will be tion. l

, A still further object is to provide an oven of this kind wherein, when: gas is-used, the fumes will be consumed and the unburnt gas will be returned as it circulates with the heat to be entireiy consume-d.

vention resides in the novel features of construction, formation, combination and arrangement of to be hereinafter more fully described, claimed, and illustrated in the accompanying drawing, in which:

thereof beingv in open position.

Figure 2 is a transverse sectional View.

Figure 3 is a' sectional View on line 3--3 of Figure 2. i

Figure 4 is a fragmentary topplan view.

- Figure 5 is a fragmentary front elevation.

Figure 6 is a fragmentary front elevation.

- Referringto the drawing, I designates the out er casing, the same being formed fromsuitable sheet metal, and is open at its bottom, as at 2. The front wall 3 of the casing is provided with a. door opening 4, which is normally closed by a 'liiingedly mounted door 5, and on which is mounted a thermometer ii to indicate oven heat; as is customary. The side walls of the casing have pivoted thereto handles i in order that the oven may be conveniently moved when desired.

I Fixed to the top wall of the casing l is a plate 8 of suchwidth that a part thereof extends be- 50 yondthe adjacent side wall of the casing, and the extended part thereof is provided with a plurality of openings 9 in which are slid'ably mounted racks or bars iii, which when moved to horizontal positions serve to support small articles of clothingto be dried.

Theouter casing i is substantially airtight withthe exception of the fresh air openings Hi formed in the side walls thereof andnear the lower edges.

With these and other objects in view, this ins Figure l is a front View of the oven, the door A pair of sheet metal bars ii are provided and have their opposite ends suitably fixed to the side wal of the casing l in diiierent planes in order that the bars will be sustained in inclined positionsythe purpose of which will appear later.

Theoven prop-er 12 which is confined within the casing [comprises a bottom it, side walls l4 top it, said bottom being riveted or otherwise suitably'secured to the bars ii. The side walls i l of the: oven are spaced from the side walls of the casing l in order that heat conducting conduits ifi-l6 are provided on opposite sides ofthe oven ill. l

Itwill be observed that the front and rear edges of the oven proper abut the front and rear walls of the'casing l, thereby making the oven proper 12 air and heat tight in order that a minimum 1 amount of heat is required to heat the oven. Fixed to the inner faces of the side walls M of the oven. l2 are guides I? on which'are supported rack-s it for supporting the cooking utensiis, as is customary.

Since the bottom wall it of the oven. is inclined upwardly thev heat directed. th'ereagainst-will be deflected into the conduit I6 and passes upwardly therein and across the top wall l5 and then enters the conduit l6, doing which a suction is created'in order that the heated air will be compelled to travel rapidly in a circuitous path, and

.will be reheated as it passes over the burner. In

case thefuel is gas any unburnt gas will be positively consumed during circulation of the heated air;

What is claimed is:

A portable oven comprisi-ng'a casing, an oven proper mounted therein and having its respective ends abutting thev front and rear walls of the casing and having its side walls spaced from the side walls of the casing to provide vertical side conduits, the top wall of the oven proper inclining upwardly and forming in conjunction with the top wall of the casing a top conduit having a'restricte ed discharge passage formed at the highest point of its inclination opening into the upper ,end of the adjacent side conduit, the bottom wallof the oven Iprbper being inclined upwardly and in a direction. reversely to the inclination of the top wall of the oven proper, said casing having an Open bottom. for disposition'over a heating'unit',

whereby air in the open bottom will be; heated by the heating unit and deflected by" the bottom wall from the restricted passage into the other side conduit to be reheated during its travel beneath the bottom wall of the oven proper.

, BENJAMIN c. BARTLEBAUGH.

of the-oven proper into one side conduit and will pass therefrom to thefltop conduit, and thence 

